What would the difference be between volcanic islands compared to the rest?

Question

I've got to do a Philippines projest and I need to know the difference between a volcano-created islan between a coral island, continetal island and other ones.

Maily want appearance, but other info is fine.

Thanks!

Answer 1

An island is any piece of land that is completely surrounded by water in two dimensions, above high tide, and isolated from other significant landmasses.

There are two main types of islands: continental islands and oceanic islands. There are also artificial islands. A grouping of geographically and/or geologically related islands is called an archipelago.

Continental islands are bodies of land that lie on the continental shelf of a continent. Examples include Greenland and Sable Island off North America; Barbados and Trinidad off South America. A special type of continental island is the microcontinental island, which results when a continent is rifted. Examples are Madagascar off Africa.

Oceanic islands are ones that do not sit on continental shelves. They are volcanic in origin. One type of oceanic island is found in a volcanic island arc. These islands arise from volcanoes where the subduction of one plate under another is occurring. Examples include the Mariana Islands.

Another type of oceanic island occurs where an oceanic rift reaches the surface. There are two examples: Iceland, which is the world's largest volcanic island, and Jan Mayen — both are in the Atlantic.

A third type of oceanic island is formed over volcanic hotspots. A hotspot is more or less stationary relative to the moving tectonic plate above it, so a chain of islands results as the plate drifts.